• From: "Christopher J. Devous" <cdevous@xxxxxxxxxxx>
  • Date: Wed, 27 Oct 1999 10:06:34 -0700
  • Organization: The Antigua Group

On Wednesday, October 27, 1999 08:47, R. Bruce Hoffman, Jr 
[SMTP:rbruceh@ibm.net] wrote:
> -----Original Message-----
> From: Debbie Helms <DHelms@Lance.com>
> To: 'MIDRANGE-L@midrange.com' <MIDRANGE-L@midrange.com>
> Date: Wednesday, October 27, 1999 11:16 AM
> >Tell me are there any real expert system tuners out there?  Can a system 
> >tuned in a day at the very most a week?   I need some system tuning
> >information where is the best place?
> Of course, this all depends. On the size of your system. On the number of
> jobs. On the number of users. On the diversity of the applications 
> On and on and on...
> Probably take much longer to do any REAL tuning. Need to monitor system 
> time and evaluate that. Need to understand application mix and usage over
> time and evaluate that. Need to understand hardware and limitations. Need 
> understand user expectations and manage them. Need to understand 
> expectations and either manage that or get them to ante-up.

All of the above is true.

On our 9406-510, I found the autotuner to be essentially worthless.  We had 
to monitor the various stats and make adjustments over time, as you 
suggest.  The situation on the 310 was the same.

Then we migrated to the 9406-720.  My IBM var told me that autotuner worked 
well, so I turned it on.

It has worked so well  that I've set virtually everything to *CALC and 
simply let the system mangage itself

This thing is so fast it's scary.  Batch jobs that used to run in hours now 
take minutes.  Interactive response times are, quite frankly, amazing, 
particularly on AR lookup over LARGE customers.

I iz impressed.

Christopher J. Devous
Director of Systems Development
The Antigua Group


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